Power-shovel.



C. L WESTN.

POWER SHVEL MPL10/mon man mw. 2o. m15.

1,254,295, i Fatend Jan. 22? MHS.

mi yyyyyyyyy um CLARENCE l omiten STATE.

e. WESTON, F Mumien, omo, essmno'efmo BALL-ENGINE r:oin?Mirte.A or

ERIE, yEnNsYLvANIA, A 'ooiwomrrxon'oy PENNSYLVANIA..

y ,rovine-slimme.

io ozll, ...fio/f..'. vll/ay ufo/feiern.'

e il' known. that l Umnmien l5. WESTON, n emmen of tbeylllnitetl States,residing at Mau-ion, in ille county 'of Marion and State oI Ohio, haveinvented vnew and useful linproveinents in Poiveieiliovele, of which thefollowing ie e Slieeitieation.

Thisv iin-'entlon 'relates to lpow-nf' shovels und eoneiete-ingertainimprovements in the 'atmstrnetion .thereof ne will be hereinafter fullydescribed Unl'1Jmnted ont in tli'eolznins.- ower shovels :is nowcommonly conetruetefl n. (flipper stiel( i v(. vpeifaited inv relaitionto n boom, This is accomplished by 'iiiin'itiiigifeliijiper'slinft ontliebo'n'i' zi'ntl leeenring billions-'to the elliper Shaft whichOperate in rai-.lie on the ilipper stick. These pinion's` .from thenature of their relations are limited' in width und are subjected to'-enel] exceptional strains :le to nmke 1t very difficult, 'inectyaillnost i'inl'ioesilrle .te so ee- 4 cure tlieinte-tlfw-'sl'iifiper slmi't ne to prevent their loosening initier theconditions of use. Theobjeet of the present invention is to obvifte thisdilienlty.

The invention 'illustrated in the zieeoin piny-ing drawings ne follows-Figure l sl )we :i sideelev'zition of frontend of a, power shovel.

Fig. 2 @section on the line 2 2 in Fig. 1. Fig.y S si detzieliecl View,partly in section, of the Shipper Shaft.

`I`1 lnirls the. freine of the shovel, S2v the wheels on which it ismounted, 3 the turn table, and 4 the boom., the boom be1ng connectedwith and enpljiorteol by the turn table.

in the usual mzmnei'. Tlie boom ordinarilyl is foi-metil with two sidemembers and the dlpp'er stiel( 5 eomnmnlyT operatesbetween.

these Side members. Diln'ier sticks also are sometimes' formed. inpairs, :md asv shown isv so formed.- The dipperG is secured totheflipper et/fiek. The hoisting cable 7 ie Secured to tbe dipper and runsover-a. block 8 at the upperend. of the boom in the usual manner,

. the cable lbeing carried beek to the power n'ieolmnisxi'i (not Shown).

l Shipper 'slur-ft bearings 9 are mounted on the side members Aof' theboom vamil the shipper Shaft 10 iS jonrnaled in these bearings extendingaeross the space between the side members :ind slightly outside of :itleast one of the side members. The shipper shaft lia-s the gears 11,tlieee fears being arranged as;

shownbn the ebelt between the bearings 9.

'I Patented5m22.191s. i

Apncationiixenuaryeo,mit. sei-mineeese.

A retaining inel'nl-)er or yoke ylfiis j on1-- nolei'l on the shipper-sliait between-tlieffgezirs'y 11 :ind'in the construction.;elioW1i,tende ont w ard] y' between I the f i'nembeii'is oftheclip.' per Stick.and has the lateral projeetions 15 wliielr forni n' sliding-eiigngementvWith tliel flipper stick incl remintlie dipper stick in positionWitlLi-elzition"toftlie' 'gears so o s toV 7U' maintain the rzte-lieanti pinions in mesh( geen.' 16' is eeenredtotlie outer end. of theshaft and this driven by the crowding engine 17 through any convenientfrneebat-` nism. n

TVliere 'the clipper stick formed with thus forming :i rollingsupport-for the' dp- V "two members und two shipper shaft gears orditions, j it will; be seen? o'n'e "gearis, forced. in. onedirection-.ancltlie 'other geen inthe 'oppio si te di reeti on when blie dipperf is' subjecte to side strain. 'lfliisjwith the .Otlienstrfiinto wl'ii eli these gears `aire snbjeted l`Ineke' it almost innnoseibe to'sosecurethem to the" shaft as to miiintiiin allein 'nfeA I Jos'itifmfixed` with relation totiieeheftf. Various eXpedi- 90 ents h iv'e been.attempted for correcting this trouble' @is by equoring. 'tl7ie shaft iand by forming'the gersendjshaft of specialmetal. The vdiliicnlty isfaggrevatedgby :the limited space which the gea-'re 'must `oeelipyg- Byforiningthe 'gears Aintegrati With the shaft, preferably by)c'a'sting'lnjthe form of. a lsteel casting and tlifen turning theShaft,nsing the gears for ycenteringthe operation. a construotion. ispiovidefl'inl iifhiohftlle, geeI-Sfremainlp members; :rsbipper 'haft'journeled'i'n seiglbearingsgeehipper pinion formedntegrally. 11 0 withthe'lshaft and located between the bearings; afrack onthe clipper stickmeshing l 'with the pinion; and e retaining member i 10 boom; a shippersha .jonrnaled on the shaft between the bearings andharin a slidingengagement with the pper stiofIrLey 2. In a, power shovel, thecombination of e boom; a dipper stick operating in relation' to saidboom; e shipgoer shaft bearing on the n i t j ournaled in said bearing;two ship er shaft pinions formed integrally "with t e shaft; reeks onthe dipper stick;` meshing said pinione; and e retaining memberjournaled on the shaft' and having a sliding. engagement with the stick.

3L In a power shovel, the combination of a boom formed with sidemembers; e dil per .stick operating between the side mem ers 'of theboom andrformed of two members;

shipper shaft bearings on the side members of the boom; a, shippersha-ft journaied in I said bearings; 'two shipper p inions formed 4integrally with the shaft and located between the bearings; racks en themembers of the dipper stick meshing with said pinions; .and e retainingmember journaled on the shaft and having a sliding engagement with thedipper stick.

4:, In e'. power shovehthe combintion of e, boom formed with sidemembers; a dipper stick operating between the side members of the boomand formed of two members; shipper shaft 'bearings onthe side members ofthe boom; :i shipper shaft journaled in said y bean-ings; two shipperpinions formed integraliy with the shaft and locntedbetween thebearings; racks on the members-of the clipper stick meshing with seidpinions; and a retaining member journaled on the shaft between thepinions and having a sliding engagement with the clipper stick.

In testimony whereof I have hereunto set my hand inthe presence of twosubscribing witnesses.

` CLARENCE B. .WESTON` Witnesses B. M. HARTMAN, V. C. Hess.

